alexoiu :
If testing with single RAM each slot on the board, do all of them work?
I have tested several times and most of the time worked all the slots, but during last few tests 4th (second grey) did not work. I guess that it is a motherboard problem. As I understand, there should not be any problem with default bios settings. Just plug two RAM chips and everything works. I have seen many times in Youtube using the same RAM for this motherboard.
Also I checked motherboard cpu pins. They are not damaged in my opinion. The most strangest thing is that during first few starts everything worked, but after a while freeze up started constantly. I almost forgot, there are a lot of constant reboot (every 3-4 seconds) with very short sound signal. After 5-6 reboot PC starts normally.
If I run it with one RAM in 2nd slot everything runs without problems.